You may also want to read the following thread, where I started a discussion about Norton DNS. In this case, it wouldn't block phishing domains that Norton SafeWeb flagged with Caution.
Norton DNS gets its data from Norton SafeWeb.

Is it possible do disable the predicition/correction url of norton dns ?

For my search in firefox i always use the adress bar (like the omnibox of chrome) and if i just use one keyword i've got an error from norton : "host not found"...
I stop using norton dns because of that, is it possible to solve it ?